Pokémon Battle Revolution features three main modes of play: Colosseum Battle Mode, DS Battle Mode, and Wi-Fi Battle Mode. In Colosseum Battle Mode, your goal is to battle your way through a series of Colosseums, each with its own set of rules and challenges. In DS Battle Mode, two to four players can get together to watch their Pokémon battle on the big screen while using their Nintendo DS systems as controllers. To participate in this mode, each player will need his or her own Nintendo DS and copy of Pokémon Diamond or Pokémon Pearl. Things get really interesting in Wi-Fi Battle Mode, which allows you to battle your friends over Nintendo Wi-Fi Connection using Friend Codes. You can also square off against Trainers from around the world using Pokémon Battle Revolution's Wi-Fi Rank syste